No there is no harm. Pcod is not a disease bit a change that has happened because of deranged lifestyle. Amenorrhea is because of anovulation even if u take treatment to regularise ur periods, they won't take the earlier form once u stop taking treatment. Ideally u would require treatment once u get married

Normally people with this will have anovlation (no egg release), oligomenorrhea (scanty periods) or even amenorrhea (no menstrual period).
But it can also have symptoms like polymenorrhea means cycles occur too often as you are experiencing.
For this you have to
-continue your treatment for PCOS with drugs which regulate menstruation and induce ovulation, insulin sensitizers as given by your gynaecologist....
Try to reduce the weight and maintain your BMI in between 19 to 24. Do regular exercise to maintain the weight.
Try to avoid worries as they will further increase the hormonal imbalance.
Once ovulation occurs plan intercourse during that period which will increase the chances of fertilization....consult gynaecologist they will do the needful.